Shadbach davis



m and by contact with the wheels, 'as and for the purposes set forth.

nith tetes stent `fir.

rimorso GAR-BRAKE.

@te Stimuli referrer tu it these-@titers ttmt zint mating @art nt the stmt.

T ALL WHOM IT MAYCONCERN: Be it known that I, SHADRACHDAVIS, of Dartmouth, in the county of Bristol, in the State of Massachusetts, have invented n. new end improved Brake for Steam `end other Carriafges; and I do hereby declare that the following is o. full andexnct description thereof, 4reference being hud to the accompanying drawings, and

to the letters of reference mnrkedthereon.

My invention consists in applying the friction to the-wheels in such n manner that their rotation will assist in operating the brakes, und cause the shoes to adhere more firmly to the wheels, and attaching the shoes to the frame by movable joints, so that the friction `will boeven on .the wheels, Snc.

Figure 1 isn perspective view of a. cnr-truck with my invention appliedto it.

Figure 2 is n. longitudinal section of acer-truck with my invention applied.

Figure 43 is a. view of a. shoe, showing the manner in which the jointis made.

Fig. 1. A is the truck; B1 B1, die., wheels; Gl, brake; Dl D, shoes; E, ro'd or bar nttnchedat one end to ..1rake C, and nt the other end to the lower end of screw Hl; F1, end `of pin in broke C?, `by which the brake'is supported; Gr, 'wheel on the upper end of screw, by which the brake is operated. Fig. 2. A, car-truck; B3B,

wheels; C2, brake; D2 D2, shoes on brake; Ez, rod or bnr' attached at one end to the brake, undl connected at; the other c nd to lower end of `the screw Hz; G3, wheels secured to upper end of screw. FigQB, shoe, showing the manner of making'the joint. l

Operation.

The brakes being applied between the whcels,as herein shown, the shoes niixed in a. movable joint, as also represented, the novelty und operation muy be noted. By revolving wheel G:l the proper way, the screw H is raised, lifting with it the end of lever El, thereby causing the slices on the brake to be brought in contact with` the wheels ofthe carriage, ns will be observed, and the shoes being constructed with movablejoints; their'whoie surfaces are brought in contact with the peripheries of the wheelspand greater friction "istheret'rom attained than by those brakes which only bring one end of the shoes to bear against the wheels; besides, the rotation i of the wheels causes the brakes to more firmly adhere to them.

What I claim as my invention, and desire to secure by Letters Patent, is- Y A cnr-brake, consisting ot the broad connecting-bar C, which rests on pivots Fl, working in slots, und has the broke-shoes movnbly fixed to it, the whole combined as described,' operated by the bar l? und screw-rod H?,

SHADRAGH DAVIS.

Witnesses:

JOHN A. HATHAWAY, JNo.'DAv1s. 

